Central

try this, to make sure rph has access to the game files:
open gta directory (G:\Program Files\Rockstar Games\Grand Theft Auto V or related)
right click -> properties
head over to safety (i dont know the exact name, look at my screenshot in german language)
make sure you choose user. not system or etc.

 
https://www.directupload.net/file/d/6441/cq6uwp3y_png.htm
 
make sure all hooks are there, especially the red marked.
 
 
 

The only thing that yet comes to my mind would be the standard - take out mods one by one and see if the problem goes away.
 
I'd start with "Super callouts". Yes, I know it is supposed to be 0.43, but then again it says "N/A" in the listing... Ideally, callout version should also be consistent with the app version.

LSPDFR as such does not require .NET - it's the RPH that does! 🙂 Having said that, you should look it up on their page.
 
When I took my first steps with LSPDFR, I also had some trouble. RPH was unable to even launch the game. However, when I got my .NET right, it just all went away and I could play normally.
 
So my "qualified guess" is that the same might work for you. Especially given the message in your log that relates to a .NET exception.